Siebert, U., Gulland, F., Harder, T., Jauniaux, T., Seibel, H., Wohlsein, P. and Baumgärtner, W. (2010) “Epizootics in harbour seals (<i>Phoca vitulina</i>): clinical aspects”, NAMMCO Scientific Publications, 8, pp. 265–274. doi: 10.7557/3.2689.